白色粒子流的无缝循环，形成一个动态的入口框架

ing digital animation on a pure black background where two streams of small, bright white particles (resembling magic dust or star trails) move dynamically in opposition. The streams first descend to the bottom of the screen, creating a converging point and then move upwards, meeting at the top, forming a continuous, inverted U-shaped/arch frame. The particle effect creates a dramatic spotlight or entry portal effect in the center. This seamless loop is ideal for movie trailers, logo reveals, text presentations, magic themes, cinematic intros, or any project needing a stylish, clean, and abstract particle background.

光厂(VJshi)视频提供白色粒子流的无缝循环，形成一个动态的入口框架视频素材下载，适用于前后倒置，商业广告标志，土耳其，魔法装备，边框等主题的内容创作。

作者署名：Happy Birthday/Getty Images/华夏视觉